# Great paper on performance and hardware

**URL:** <https://discourse.julialang.org/t/great-paper-on-performance-and-hardware/36093>\
**Category:** Performance\
**Created:** [March 17, 2020, 10:37am UTC](https://discourse.julialang.org/t/great-paper-on-performance-and-hardware/36093 "2020-03-17T10:37:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jakobnissen](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jakobnissen/32/13477_2.png) [@jakobnissen](https://discourse.julialang.org/u/jakobnissen)\
**Post date:** [March 17, 2020, 10:37am UTC](https://discourse.julialang.org/t/great-paper-on-performance-and-hardware/36093/1 "2020-03-17T10:37:20Z")

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About 6 months back, a user on Slack posted a great paper on coding optimization. It was very long and went into detail on all relevant aspects of how RAM and CPUs work. Can anyone remember the name of it?

Already answered on Slack, but this paper is too good to be eaten by the memory hole of Slack!

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**Author:** ![fkastner](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fkastner/32/6322_2.png) [@fkastner](https://discourse.julialang.org/u/fkastner)\
**Post date:** [March 17, 2020, 10:38am UTC](https://discourse.julialang.org/t/great-paper-on-performance-and-hardware/36093/2 "2020-03-17T10:38:56Z")

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Well then, let me ask again:  
Is it this one?

_What Every Programmer Should Know About Memory_  
Ulrich Drepper  
Red Hat, Inc.  
[drepper@redhat.com](mailto:drepper@redhat.com)  
November 21, 2007

> **[cpumemory.pdf](https://people.freebsd.org/~lstewart/articles/cpumemory.pdf)**
>
> 912.16 KB

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**Author:** ![JeffreySarnoff](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jeffreysarnoff/32/1980_2.png) [@JeffreySarnoff](https://discourse.julialang.org/u/JeffreySarnoff)\
**Post date:** [March 17, 2020, 10:50am UTC](https://discourse.julialang.org/t/great-paper-on-performance-and-hardware/36093/3 "2020-03-17T10:50:41Z")

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That paper was highlighted on one of our Slack channels. I missed the SO reference though.